- the science that deals with the preservation of health.
- a condition or practice conducive to the preservation of health, as cleanliness: Poor personal hygiene can lead to health issues such as skin infections.Mental hygiene in children should be constantly monitored by parents and teachers.
- a beneficial or recommended practice or set of practices (used in combination): Using the same password on all of your important accounts is simply not good password hygiene.
- the science concerned with the maintenance of health
- clean or healthy practices or thinking
